- Series 1
- s01e01 - 2008-05-03 - 400 False Legs
- The bizarre case of a Bridport couple who found 400 false legs hidden under their floorboards
- s01e02 - 2008-05-10 - Strategic Steam Reserve
- Steve Punt examines the case of the missing steam trains supposedly stashed away ready to keep the country running in the event of nuclear war.
- s01e03 - 2008-05-17 - Plane Crashes in the Peak District
- Steve investigates the mystery surrounding the air crashes of Dark Peak, Britain's own Bermuda Triangle, where 50 planes went down in 20 years.
He treks across the Peak District's inhospitable moorland in an attempt to understand why so many aircraft should have crashed in such a short space of time.
- Series 2
- s02e01 - 2009-06-06 - Hitler's British HQ
- Did Hitler intend to set up his post-invasion headquarters in Balham, south London? Steve talks to Balham locals, including Arthur Smith,
and gets access to the documentation showing the Nazis' intentions for a Third-Reich Britain.
- s02e02 - 2009-06-13 - TV Detector Vans
- Steve Punt goes on the trail of the vans that allegedly trace TV licence evaders, checking out rumours that they're little more than a myth.
Faced with a wall of official silence, he travels hundreds of miles to track down one of the legendary vehicles for himself.
- s02e03 - 2009-06-20 - A British Manchurian Candidate
- Steve Punt searches for the real Manchurian Candidate when he looks at mind control, the world's favourite conspiracy theory. From hypnosis to narcotics,
Punt calls in expert witnesses to find out whether it is possible to get people to act against their will
- Series 3
- s03e01 - 2010-09-18 - The phantom settlement of Argleton
- Steve examines the curious case of Argleton, the place that only exists on internet maps.
- s03e02 - 2010-09-25 - Nazi UFOs
- Steve Punt probes the claim that the Nazis developed flying saucers.
- s03e03 - 2010-10-02 - A recording of Queen Victoria's Voice
- On the detective trail to the dawn of recorded sound in search of Queen Victoria's voice. If a recording does exist, what was her message?
- s03e04 - 2010-10-09 - The curse of the Crying Boy painting
- Steve investigates the curse of the Crying Boy paintings and why, in house fires in the 80s, the pictures were the only items to survive unscathed.
- Series 4
- s04e01 - 2011-09-03 - The murder of Hubert Chevis by poisoned partridge
- Steve embarks on a bizarre whodunit, re-examining the death of Lieutenant Hubert Chevis in 1931.
- s04e02 - 2011-09-10 - A death ray allegedly made by Harry Grindell Matthews
- This week Steve heads to the valleys of South Wales to find the inventor of a 'death ray'.
- s04e03 - 2011-09-17 - A missing film about David Lloyd George
- Steve investigates the mysterious disappearance of a silent film about Prime Minister David Lloyd George after the First World War.
- s04e04 - 2011-12-31 - The Battle of Watling Street
- Steve Punt searches for the site of the epic Battle of Watling Street, where the Britons were massacred by the Romans.
- Series 5
- s05e01 - 2012-09-08 - The arsenal of Kris Ruddjers
- Steve Punt is called on to investigate a dead pensioner's secret stash of arms, surveillance equipment and bomb-making materials.
- s05e02 - 2012-09-15 - The Charfield railway disaster (The Woman in Black)
- Steve Punt looks into the 1928 Charfield rail crash, with the mystery of its two unknown victims, and the unidentified woman in black who visited the memorial for 25 years.
- s05e03 - 2012-09-22 - The lost Roanoke Colony
- Steve Punt searches for new clues on an ancient map to solve a 400-year-old missing persons case. Walter Raleigh sent 117 colonists to the New World but they were never seen again.
- Series 6
- s06e01 - 2013-08-17 - The Case of the Vanishing Machine Gun Maker
- Steve Punt investigates the strange tale of the vanishing gun inventor, William Cantelo, who was uncannily similar in appearance to the famous machine gun inventor Hiram Maxim.
- s06e02 - 2013-08-24 - The Holinwell Incident
- One summer's day in 1980, hundreds of children fell ill and fainted. Steve Punt investigates the mysterious case of the collapsing children.
- s06e03 - 2013-08-31 - The murder of Charles Walton, the Pitchfork Murder, in Lower Quinton
- Punt PI investigates the Pitchfork Murder of 1945, in which 74-year-old farm labourer Charles Walton was mysteriously killed, and the case was never solved.
- s06e04 - 2013-09-07 - Who Killed the Bears? The killing of two bears in the Forest of Dean
- Steve Punt investigates the killing of two performing bears by a mob in the Forest of Dean in 1889. He asks if those convicted were victims of a miscarriage of justice.
- Series 7
- s07e01 - 2014-07-12 - The Mysterious Death of Flying Millionaire Alfred Loewenstein
- Steve investigates the mysterious death of Belgian millionaire Alfred Loewenstein, who fell out of his own aeroplane in 1928.
- s07e02 - 2014-07-19 - The Baker Street Bank Robbery
- Punt PI examines curious rumours surrounding the involvement of the security services in the Baker Street bank robbery of 1971
- s07e03 - 2014-07-26 - The Case of the MP (Victor Grayson) Who Vanished
- Steve Punt examines the curious case of the socialist MP Victor Grayson, who vanished into thin air.
- s07e04 - 2014-08-02 - Who Put Bella in the Wych Elm?
- Steve reopens the mysterious case of a woman found dead inside a tree.
- Series 8
- s08e01 - 2015-08-08 - The Murder of Hollywood director William Desmond Taylor
- Steve Punt investigates the unsolved murder of major Hollywood director William Desmond Taylor, shot dead in 1922. Steve peers into Taylor's shady past for clues to the case.
- s08e02 - 2015-08-15 - The Case of the Missing Cezanne
- Steve Punt is on the trail of a Cezanne painting, stolen from the Ashmolean Museum in Oxford whilst the city celebrated the millennium, and not seen since.
- s08e03 - 2015-08-22 - The Great Mull Air Mystery
- Steve Punt investigates the mysterious flight of Peter Gibbs. On Christmas Eve 1975 he took off from the Isle of Mull, disappearing into the night and was never seen alive again.
- Series 9
- s09e01 - 2016-07-30 - The Suspicious Death of Emile Zola
- Steve Punt travels to Paris to investigate the suspicious death of celebrated writer Emile Zola.
- s09e02 - 2016-08-06 - The Reclusive Skeleton of Fingringhoe
- Steve Punt ventures into the heart of rural Essex to investigate the mysterious disappearance of actress Ada Constance Kent just before the Second World War.
- s09e03 - 2016-08-13 - There's a Kind of Hum
- Mating fish? Mind control? Steve turns detective as he goes in search of a low level hum.
- Series 10
- s10e01 - 2017-09-02 - Lost Nukes
- Steve is called in to investigate the unlikely disappearance of American and Russian nuclear weapons.
- s10e02 - 2017-09-09 - The Treasure in the Piano
- A piano tuner discovers a hoard of gold coins hidden inside a piano. But nobody knows who it belongs to. Punt PI tries to find out who hid the money.
- s10e03 - 2017-09-16 - The Missing Priest
- Steve Punt investigates the story of the Polish priest who disappeared in Bradford in 1953. Father Borynski left his house suddenly and without explanation, never to be seen again.
- s10e04 - 2017-09-23 - Taking the Pissoir
- When is a gentleman's urinal not a urinal? When it's a work of art. 100 years after Marcel Duchamp created Fountain, Steve Punt wonders whether it was actually by someone else.
- Extras
- The Mysteries of Punt PI
- Steve Punt explores the eternal appeal of a good mystery, drawing on 10 years of experience as Radio 4's resident gumshoe, Punt PI.